Understanding Ultracold Neutron Production in Oxygen Solids from Volume and Temperature Dependent Yields

Details Understanding Ultracold Neutron Production in Oxygen Solids from Volume and Temperature Dependent Yields Understanding Ultracold Neutron Production in Oxygen Solids from Volume and Temperature Dependent Yields

2011-03-25

arxiv.org/abs/1103.5093v1

Physics

Nuclear Physics

Nuclear Experiment

5 pages, 5 figures

Scientific paper

We present experimental data on ultracold neutron (UCN) production in solid oxygen from 5 K to 50 K. The experiment used 3 cells of different dimensions in order to study the excess UCN elastic scattering in s-O$_2$ due to source density non-uniformities. We present a combined $\chi^2$ analysis with the aid of Monte-Carlo simulations which contain the detailed physics of UCN transport as well as cold neutron attenuation. The results validate the UCN production and upscattering cross-sections extracted from the dynamic structure function derived from inelastic neutron scattering, and illustrate the role of magnetic scattering in enhancing UCN production in s-O$_2$.

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